▲Firm frame could be detachable: by adopting firm panel aluminum frame, matched with aluminum angle, strong and steady structure. Thus, filters could be operated and not easy to be changed in shaped in bad ... Read More

Disposable cardboard filter has hard frame and high strength cardboard. Filter is pleated fiber filtration material. Single side metal mesh as lining. Good outlook. Durable structure. Usually hard frame is used ... Read More

Disposable cardboard filter has hard frame and high strength cardboard. Filter is pleated fiber filtration material. Single side metal mesh as lining. Good outlook. Durable structure. Usually hard frame is used ... Read More